GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

Front Brakes

  • Discard Thickness (see note)

30.7 mm

1.209 in

  • Maximum Lateral Runout

0.13 mm

0.005 in

  • Minimum Thickness After Refinish

31.08 mm

1.223 in

  • Minimum Wear Thickness

31.08 mm

1.223 in

  • Rotor Thickness (new)

32 mm

1.26 in

Thickness Variation

0.013 mm

0.0005 in

Rear Brakes

  • Discard Thickness

24.7 mm

0.97 in

  • Maximum Lateral Runout

0.15 mm

0.006 in

  • Minimum Wear Thickness

25.02 mm

0.985 in

  • Minimum Thickness After Refinish

25.02 mm

0.985 in

  • Rear Axle Shaft Flange

0.05 mm

0.002 in

Thickness Variation

0.013 mm

0.0005 in

All brake rotors have a discard dimension cast into the rotor. Replace any rotor that does not meet this specification. After refinishing the rotor, replace any rotor that does not meet the maximum or minimum thickness after refinish specifications.